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2026-08-16 13:13:45 +02:00 · 2022-08-06 13:35:32 +08:00
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+/*!
+    \file  systick.c
+    \brief the systick configuration file
+
+    \version 2017-02-10, V1.0.0, firmware for GD32F30x
+    \version 2018-10-10, V1.1.0, firmware for GD32F30x
+    \version 2018-12-25, V2.0.0, firmware for GD32F30x
+*/
+
+/*
+    Copyright (c) 2018, GigaDevice Semiconductor Inc.
+
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without modification, 
+are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice, this 
+       list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice, 
+       this list of conditions and the following disclaimer in the documentation 
+       and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holder nor the names of its contributors 
+       may be used to endorse or promote products derived from this software without 
+       specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+OF SUCH DAMAGE.
+*/
+
+#include "gd32f30x.h"
+#include "systick.h"
+
+volatile static uint32_t tick = 0;
+
+/*!
+    \brief      configure systick
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void systick_config(void)
+{
+    /* setup systick timer for (SysTick_Freq) Hz interrupts */
+    if (SysTick_Config(SystemCoreClock / SysTick_Freq)){
+        /* capture error */
+        while (1){
+        }
+    }
+    /* configure the systick handler priority */
+    NVIC_SetPriority(SysTick_IRQn, 0x05U);
+}
+
+/*!
+    \brief      delay a time in milliseconds
+    \param[in]  count: count in milliseconds
+    \param[out] none
+    \retval     none
+*/
+void delay(uint32_t count)
+{
+		uint32_t utick;
+    utick = count + get_tick();
+
+    while(get_tick() < utick){
+    }
+}
+
+/*!
+    \brief      delay a time in milliseconds with low power
+    \param[in]  count: count in milliseconds
+    \param[out] none
+    \retval     none
+*/
+void delay_lp(uint32_t count)
+{
+		uint32_t utick;
+    utick = count + get_tick();
+
+    while(get_tick() < utick){
+			pmu_to_sleepmode(WFI_CMD);
+    }
+}
+
+/*!
+    \brief      delay decrement
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void delay_decrement(void)
+{
+		tick++;
+}
+
+/*!
+    \brief      get systick tick
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+
+uint32_t get_tick(void)
+{
+	return tick;
+}
+
+void systick_DisableIRQ(void)
+{
+  /* Disable SysTick Interrupt */
+  SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
+}
+
+void systick_EnableIRQ(void)
+{
+  /* Enable SysTick Interrupt */
+  SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
+}
+
+void systick_Disable(void)
+{
+	/* Disable SysTick */
+	SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
+}
+
+void systick_Enable(void)
+{
+	/* Enable SysTick */
+	SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
+}
+
+void systick_deinit(void)
+{
+	SysTick->CTRL  = 0;
+	SysTick->LOAD = 0;
+	SysTick->VAL = 0;
+}